<template>
  <div class="about">
    <h1>{{ id ? "编辑" : "新建" }}广告位</h1>
    <el-form label-width="120px" @submit.native.prevent="save">
      <el-form-item label="名称">
        <el-input v-model="model.name"></el-input>
      </el-form-item>
      
      <el-form-item label="广告">
                <el-button  size="small" @click="model.items.push({})">
            <i class="el-icon-plusin"></i>添加广告
            </el-button>
          <el-row type="flex" style="flex-wrap:wrap">
            <el-col :md="24" v-for="(item,i) in model.items" :key="i">
              <el-form-item label="跳转链接">
                <el-input v-model="item.url"></el-input>
              </el-form-item>
              <el-form-item label="图片" style="margin-top:0.5rem;">
               <el-upload
              class="avatar-uploader"
              :action="uploadUrl"
              :headers="getAuthHeaders()"
              :show-file-list="false"
              :on-success="res=>$set(item,'image',res.url)"
             
            >
              <!-- :before-upload="beforeAvatarUpload" -->
              <img v-if="item.image" :src="item.image" class="avatar" />
              <i v-else class="el-icon-plus avatar-uploader-icon"></i>
            </el-upload>
              </el-form-item>
              <el-form-item>
                <el-button size="small" type="danger"
                 @click="model.items.splice(i,1)">删除</el-button>
              </el-form-item>
            </el-col>
          </el-row>
      </el-form-item>

      <el-form-item>
        <el-button type="primary" native-type="submit">保存 </el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  props: {
    id: {},
  },
  data() {
    return {
      model: {
        items:[],
      },
    };
  },

  methods: {
    async save() {
      //新建是post，编辑put
      let res;
      if (this.id) {
        //如果有id传递到有id的接口，去修改
        res = await this.$http.put(`rest/ads/${this.id}`, this.model);
      } else {
        //没有id则传递到没有id的接口，去新建
        res = await this.$http.post("rest/ads", this.model);
      }
      console.log(res);
      this.$router.push("/ads/list");
      this.$message({
        type: "success",
        message: "保存成功",
      });
    },
    async fetch() {
      const res = await this.$http.get(`rest/ads/${this.id}`);
      this.model = Object.assign({},this.model,res.data);
    },
  },
  created() {
    this.id && this.fetch(); //有需要编辑的id才执行方法
  },
};
</script>
